activity
20222026
most citedIsotropic cosmic birefringence from early dark energy

60 citations · 93 across the 9 of their papers we have counts for

collaborators

9 papers

hep-ph2026

The COSMIC WISPers White Paper: The physics case for Weakly Interacting Slim Particles

Ariel Arza, Deniz Aybas, Shyam Balaji +124

Axions and other very weakly interacting slim particles (WISPs), with masses below 1 GeV, arise naturally in many extensions of the Standard Model of particle physics. In particula…

astro-ph.CO2026

A New Constraint on the Optical Depth from the Reionization History Independent of CMB Large-Scale E-Mode Polarization

Yuta Kageura, Masami Ouchi, Fumihiro Naokawa +5

Recent studies report a mild discrepancy between BAO and CMB measurements within the CDM framework. This discrepancy could be explained if the optical depth inferred from th…

astro-ph.CO2025

Planck Constraints on Axion-Like Particles through Isotropic Cosmic Birefringence

Toshiya Namikawa, Kai Murai, Fumihiro Naokawa

We present constraints on isotropic cosmic birefringence induced by axion-like particles (ALPs), derived from the analysis of cosmic microwave background (CMB) polarization measure…

astro-ph.CO2025

Universal profile for cosmic birefringence tomography with radio galaxies

Fumihiro Naokawa

We propose a new method to tomographically probe cosmic birefringence using radio galaxies. We show that the redshift evolution of the cosmic birefringence angle induced by a slow-…

astro-ph.CO2024

phase ambiguity of cosmic birefringence

Fumihiro Naokawa, Toshiya Namikawa, Kai Murai +2

We point out that the rotation angle of cosmic birefringence, which is a recently reported parity-violating signal in the cosmic microwave background (CMB), has a phase ambigui…

astro-ph.CO2023

Gravitational lensing effect on cosmic birefringence

Fumihiro Naokawa, Toshiya Namikawa

We calculate the effect of gravitational lensing on the parity-odd power spectrum of the cosmic microwave background (CMB) polarization induced by axionlike particles (ALPs). Sever…